Coal-lorry



W. H. PAVITT, )8.

GOAL LORRY.

APPLICATION FILED JAN. 20, 1919.

Patented Dec. 21, 1920.

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W. H. PAVITT, JR.

COAL LORRY- APPLICATION FILED JAN 20. I319.

Patented ec. 21,1920.

2 SHEETS-SHEET 2- I I I 35 7236 fi'lItom/amg WIJLIZ IAM H. PAVITT, Jlt, 0F NEW YORK. N. Y., ASSIGNOR ONE-THIRD TO LOU IS WILPUTTE AND TWO-THIRDS T0 ALICE A. WILIPUTTE, BDTH OF NEW ROCHELLE,

NEW YQRK.

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T 0 all whom it may concern Be it known that 1, WILLIAM H. PAVITI, Jr., a citizen of the United States, and rpsidentof New York, in the county of New York and State of New York, have invented certain new and useful Improvements in- -Coal-Lorries, of which the following is a specification. I v

My present invention consists in an improved coal lorry adapted for charging the retorts or oven chambers of coke ovens over which the lorry runs, and the general obwhich characterize my invention. are pointed out with particularity in the claims annexed to and forming a part of this specification; for a better understanding of the invention, however, and the advantages possessed by it reference should be had to the accompanying drawings and descriptive matter in which I have illustrated and described a preferred embodiment of my invention.

Of the drawings Figure 1 is an elevation of a coal charge lorry and a portion of the oven structure over which it runs, the latter being in section.

Fig. 2 is a section of the line 22 of. Fig. 1.

Fig. 3 is a diagrammatic plan of a por tion of the lorry.

Fig. 4 is an elevation, in section on the line 4;-4 of Fig. '3, of, a portion of the lorry.

Fig. 5 is a section on-the line 5-5 of Fig. 4. i

In the drawings I have illustrated the use of my invention in a coal charging lorry D ofthe type commonly employed in charging coal into by-product coking ovens he ing horizontal coking chambers. In .tl e drawings A represents the coke oven structure proper and A one of the coking chambers therein. At distributed points along the length of the chamber A chargin holes A are formed in the roof of the oven chamber; asshown there are four of these charging holes. The charging holes are normally closed, by removable cover plates C, seated in charging hole castings B which are embedded in the masonry of the oven structure Specification of Letters Patent. Pgfiggntefl 'Digc, 21, 1920, Application filed January $0, 1919. Serial. No. 272,032.

proper. The coal charginglorry which runs upon track rails A mounted on the roof of the oven structure, is provided with hoppers D D D? and D one for each of the charging orifices A Each hopper, as

shown comprises an upper cylindrical portion, an intermediate conical portion, and a tubular bottom'portion D, the latter registering with the corresponding charging hole A in the oven charging operation. Trun- 'nions D are carried by the tubular portion D 'ozt each hopper, and the passage of 'coal out of the hopper through the discharge orificeformed by the open lower end of its tubular portion D is controlled by a gate or valve which has arms pivoted on the cor responding pair of trunnions D. Each gate E is connected to suitable operating mechanism; the connections shown comprise a link E a crank arm E and a crankshaft E*. In so far as above described, the coal lorry shown embodies nothing novel with me, but

on the contrary is of a type well known. and

extensively used.

To prevent the spillage of coal on the top of the oven at the margin of the charging holes inthe oven charging operation, I provide each hopper with a funnel like member F having arms F journaled on the corresponding trunnions D which are elongated for the purpose. In the oven charging position each funnel F is coaxial with the tubular .portion l) of the corresponding place the funnels F are swung into the position shown in Figfl and in dotted lines in Fig. 4. The then lowermost portion of a The lower end of the funnel is .then.

funnel F is at, or as shown is somewhat above the level of the lowermost portion of the corresponding gate E when the latter isin its normal closed position. To thus adjust the tunnels F, I have provided in the particular construction shown. an extension F on one arm F of each funnel F. and have connected this extension by a link F shown as including a turn buckle for length adjustment, to a crank arm F carried by a rock shaft journaled in the frame work of the lorry. As shown, there are two of these rock shafts, one marked F and: one F which are'in alinement with one an other. The funnels F for the hoppers D D and D are connected to the rock shaft F and the funnel F of the hopper D is connected to the rock shaft E The rock shaft F may be manually rotated by means of a link F connecting an arm carried by the rock shaft to an operating lever F fulcrumed at D and working along a quadrant D provided with notches by which the lever may be locked in either of its two positions. The rock shaft F is similarly connected by a link F to an operating lever F working along a quadrant D The levers F 7 and F are located on the operating platform or in the cab of the lorry as conditions make desirable. By making the funnel F for the hopper D operate separately from the other funnels it is possible to completely discharge the hoppers D D and D and to replace the covers C for the corresponding charging holes A before the hopper D is completely discharged. This avoids difficulty from escaping gases as will be read:

'ily recognized by those skilled in the art.

To make it easier to swing the funnels F back and forth between thei'lotted and full line positions shown in Fig. 4, I attach an adjustable counter weight F to each funnel.

With the funnels F in their elevated positions there is suflicient clearness between the bottoms of the hoppers and the top of the oven structure to minimize interference from tools or other small objects lying on the top of the oven as the lorry is moved along the rails A lVith the funnels F in their lowered positions the lateral flow of coal out on to the top of the oven at the margins of the charging holes is substantially minimized since the bottoms of the funnels F may then be within an inch or so of the level of the top of the oven. Any coal passing out of a hopper and not directly entering the corresponding orifice A will collect in the cavity 13 provided in the charging hole casting B at the margin of the orifice in the latter. By the use of the funnel it is thus possible to avoid the spillage of coal on to the top of the oven which invariably occurs when the coal is allowed to fall without any guiding inclosure from the bottom of the hopper when the latter is elevated, as it must be in practice, a few inches from the top of the oven. The spillage of coal on the oven top under such conditions is augmented by. the fact that the coal is ordinarily finely crushed and when it impinges against the top of the oven at the margin of the charging holes it tends to spread out and under these conditions has no appreciable or definite angle of repose. The pivot-ed funnels scribed the best embodiments of my invention now known to me, it will be apparent to those skilled in the art that changes may be made in the form of apparatus shown without departing from the spirit of my invention as set forth in the appended claims, and that certain features of. my invention may sometimes be used to advantage without a corresponding use of other features. Having now described my invention, what I claim as new and desire to secure by Let ters Patent, is;

1. A coke oven coal charging lorry having a hopper with a bottom discharge orificeand in combination therewith a funnel pivoted to the lorry to swing back and forth between a lower position in which it is beneath said orifice and an upper position at the side of the orifice.

2. A coke oven coal charging lorry having a hopper with a bottom discharge orifice and a valve controlling the discharge through said orifice, and in combination therewith, a funnel separate from said valve and pivoted to the lorry to swing back and forth between a lower position in which it is beneath said orifice and an upper position in which it is at the side of the orifice.

3. A coke oven coal charging lorry having a hopper with a bottom discharge orifice and provided with trunnions at opposite sides of said orifice, a gate valve pivoted on said trunnions and controlling said orifice and a funnel separate from said valve and also pivoted on said trunnions and'adapted to swing back and forth between a lower position in which it is beneath said orifice and an upper position in which it is at the side of the orifice.

4. A coke oven coal charging lorry having a plurality of hopper arranged side by side, each with a bottom discharge orifice and a .valve controlling the discharge through said orifice and in combination therewith a funnel for each hopper separate from the valve thereof and pivoted to the lorry to swing back and forth between a lower position in WVM. H. PAVITT, JR 

